GNMLS Lockbox Program

Please view the links below for documents and info related to the GNMLS lockbox program.  If you have any questions, please call the board office at (715) 356-3400 or email us at

SentriLock users may call 513-618-5800 for assistance between 7am-11pm CST.

If you are a new lockbox program member and have not been trained, please click the SentriKey Lockbox Agent Orientation* link below and email us when complete so we can activate your SentriKey ID.   If you do not have an agent photo in the MLS, please attach that to your email.

SentriLock System Overview Video:  

SentriKey mobile app:  

Lockbox Training & Support

About SentriLock

SentriLock was founded in 2003 on three key attributes that continue to guide the company’s phenomenal growth: Stability. Superior technology. Exceptional customer service.

SentriLock is 100% owned by the National Association of REALTORS.  NAR ownership provides an uncommon level of stability and assurance that their products, services, and support staff will be here today, tomorrow, and many years down the road.


Details & Benefits of Sentrilock BlueTooth REALTOR® Lockbox System:


SentriLock's BlueTooth REALTOR® Lockbox System is a reliable and secure technology providing outstanding customer service that's rated tops in the industry. SentriLock works every day to serve the true needs of REALTORS offering you secure, easy, and reportable access to every listing you manage.

  1. BlueTooth REALTOR® Lockbox System:
    • Instant access via Bluetooth using SentriKey mobile app
    • One-day codes for non-subscribers
    • Web-based access logs
    • Long-lasting, user-replaceable batteries
    • Illuminated keypad
    • Showing notifications
  2. SentriLock YouTube channel
  3. SentriLock BLE System FAQs

About ShowingTime

ShowingTime is a service of GNMLS available to all offices, agents and appraisers. Inspectors may contact the MLS office about signing up. You may register and watch a training video here: ShowingTime for the MLS QuickStart Training.

From the MLS you can go to ShowingTime in your Quick Links. Click Help & Support on the left and you will find many topics with documentation or video training.